May 19, 2014 · You can not change length of Array once created in Java. Array is static in nature. Object[] objArray = new Object[10]; ArrayList: ArrayList is a variable length Collection class. …

Jul 21, 2014 · First and Major difference between Array and ArrayList in Java is that Array is a fixed length data structure while ArrayList is a variable length Collection class. You can not …

Sep 4, 2012 · An ArrayList uses an array behind the scenes. So accessing by index can be done in constant time. Adding can also be done in constant time, if the array has been allocated with …

Mar 7, 2010 · The java ArrayList implements List Interface; ArrayList always maintain the insertion order of the elements; ArrayList only stores value or element; ArrayList can contain duplicate …

Jun 6, 2010 · ArrayList and Vector both implements List interface and maintains insertion order.But there are many differences between ArrayList and Vector classes... ArrayList …

In general (and in Java) an array is a data structure consisting of sequential memory storing a collection of objects. List is an interface in Java, which means that it may have multiple …

Sep 10, 2013 · The compiler allows assigning an ArrayList<String> to Collection<String> because ArrayList is-a Collection i.e. all ArrayLists are Collections because they implement the …

Oct 16, 2013 · ArrayList is internally backed by Array in Java, any resize operation in ArrayList will slow down performance as it involves creating new Array and copying content from old array …

Another difference between ArrayList and LinkedList is that apart from the List interface, LinkedList also implements Deque interface, which provides first in first out operations for …

Feb 27, 2014 · The major difference between the two is that the vectors are synchronized, so they are thread-safe, and the ArrayLists are not. Both of them uses an array to store the data they …